Elevator



(No Model.)

G. A. WELD.

ELEVATOR.

No. 888,469. Patented Aug.- zs, 1888.

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UNITED STATES PATENT OFFICE.

GEORGE A. WELD, OE WINCHESTER, MASSACHUSETTS.

ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 388,469, dated August 2.8, 1888.

Application filed May 1, 1888. Serial No. 272,450. (No model.)

To all whom it may concern- Be it known that I, GEORGE A. WELD, of Winchester, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvementih Elevators, of which the following, taken in connection with the accompanying drawings, is a specification.

The object of my invention is to so construct and arrange the elevator-car and the gates and theirconnecting parts that the gates shall be automatically locked when the car is t not present, automatically unlocked when the car is present, and also automatically held up out of the way when the car is present. This object I attain by the mechanism shown in the accompanying drawings, in which- Figure l is an elevation of my device, looking from the interior of the elevator-well outward. Fig. 2 is a side elevation of the parts that constitute the locking device, also looking from the interior. Fig. 3 is a cross-section taken on line x x of Fig. 2, and Fig. 4 is an enlarged view showing a part of the looking device. I

My present invention is an improvement on the device patented to me January 4, 1887, No. 355,427.

In Fig. 1, A and A represent two of the elevator guide-posts, and B B B B the gate, which is arranged to slide on the ways T T. Risa rope to one end of which the gate is attached. Said rope It passes over a pulley, R, and has attached to its end a weight, B to balance the gate.

b b b b in Fig. 1 represent arms projecting from the side post, B, of the gate, so as to embrace the ways T on the side of the elevator-posts A A, said arms acting as guides for the gate as it slides up and down on the ways. One of these guiding-armsviz., 1)"- extends over the inner face of the post A, as shown in Figs. 1 and 3, so as to engage with the latches K K.

The latches K K, Figs. 1 and 2, are made as shown in Figs. 3 and 4, and each has a part, k, Fig. 4, which projects beyond the plate K, (at such time as may be desired,) so as to en gage with the arm b Figs. 1 and 3, and thus hold the gate in place, as will be explained.

out of the way of the arm I) on the gate B B To move the latches KK, I have the f0llowing device:

L, Figs. 1, 2, and 3, is a lever pivoted at L to the post A. The lower end of the lever L has a spring, S, which, being attached to the post A, has a tendency to throw the lower end of the lever L outwardly and the upper end inwardly, as shownin Fig. 2. At the upper end of the lever L, I have an arm, 0, and at the lower end an arm, 0, Fig. 2. At the lower end I also have an arm, G, Figs. 2 and 3, which extends outwardly and has upon it a frictionwheel, 0 Figs. 2 and 3.

D, Figs. 2 and 3, is a cam'piece attached to the elevator-carriage, and, in coming in contact with the wheel (J on the arm 0, forces it inwardly, thus causing the lower end of the lever L to swing inwardly, and, acting through the arm 0, Fig. 2, forces the latch K inward out of the way of the arm I) on the gate B B B B. The ends of the lever L may be bent so as to form the arms 0 and G, and the latches K K may be made and attached to the lever L, if desired. In Fig. 2 the upper latch, K, is shown as pressed in out of the way of the arm b but the lower latch, K, is out and in a position to prevent the arm I) from moving up-that is, the gate B B B B cannot be raised. Now, if we suppose the elevator-carriage to be raised or lowered, so that the attached cam-piece D is in contact with the wheel 0 then the arm 0 of the lever L will be pressed in, and with it the lower latcli,K. At the same time the upper latch, K, will spring out, in which case the gate may be raised, so that its arm I) will rest upon the upper latch, K, and be held up so long as the cam-piece D rests upon the wheel (B -that is, so long as the elevator-carriage is at the floor to which the gate B B B B' belongs. \Vhen theelevator-carriage moves away, then thelever L will K, thrown in, thus releasing the gate and alway-gate having the arm If, all substantially lowing it to fall and protect the hatehway. as described, and for the purpose set forth. I claim- I GEO. A. \VELD. 5 The combination of an elevator-car having \Vitnesses:

the cam-piece D, the lever L, having an arm, ILLIAM EDSON,

be moved by the springS and the npperlatch, I the pivoted latches or stops, and the hatchl G, and the arm 0, having an extension, 0", l \V. H. GRIFFIN. 

